BMW

BMW N55 Catted Downpipe

$ 850.00

Description

Free up your BMW's N55 engine with the COBB 3" Downpipe! This direct replacement for the factory downpipe features a 200 cell count high flow catalytic converter and 304 stainless steel tubing. The CNC machined v-band flange and the cast merge section ensures perfect OEM-like fitment. All of these features combine to provide a free flowing exhaust outlet for high energy exhaust gases to reduce turbo back pressure and increase turbo efficiency. Off-the-shelf mapping available for Accessport part number AP-BMW-002 so it's perfectly tuned out of the box.

Why?

The COBB 3" Stainless Steel Catted Downpipe for the BMW N55 powered vehicles is a direct replacement which features a high-flow 304 stainless steel construction and cast tail section.

Features

BMW N55 Catted Downpipe

200 Cell Count High Flow Catalytic Converter

3" Diameter 304 Stainless Steel Tubing

Casted Merge Section at Cat-back Connection

CNC'ed V-Band Flange

Gallery (2)

Customer Photos

Reviews

BMW N55 Catted Downpipe is rated
4.5 out of
5 by
2.

Rated 5 out of
5 by
BD4P from
Sounds awesome, no smellI've had this for about three weeks. The install went pretty smoothly with my mechanic saying the fitment was about a 8.5 out of 10 compared to OEM. With stock exhaust this is LOUD at start-up but settles into a nice rumble after initial warm up. Idle and coasting has almost no droning even in my convertible, but when I get on it it sounds like a F1 car! I love the rumbling and popping at low revs when coasting to. I don't really notice the faster spool up of the turbos but I've been tuning at the same time so it's hard to tell. I notice no smell which is good since that's why I went with the catted DP in the first place so for me the cost was absolutely worth it since I can't smell it even with the top down stopped at a light. Customer support was top notch too when I called about the gaskets (you reuse the OEM ones).

Date published: 2016-04-10

Rated 4 out of
5 by
martymac from
Solid product!!2011 335I N55... delivery was prompt/fast! unboxed the downpipe,no hardware! called Cobb,they were very proffessional and expedited the new hardware! set back installation a day and a half,no problem. i did the install myself in my garage,with jackstands. not the easiest of jobs but it can be done! $400.00 was the average install price around town. i was a little disappointed with the hardware that came with the downpipe,i was expecting better quality. the hardware that was sent had to be altered/grinded. the flanges on the bolt/nut were too wide to install on the exhaust pipe side of the downpipe. i didnt think about it at the time but i could have used the original hardware/nuts. other than that ,good product. i will be purchasing my Accessport soon and put all these after market parts(High airflow intake,FMIC,chargepipe,downpipe)to use!